The word "microbes" in paragraph 3 could be best be replaced by which of the following?

Câu hỏi :

The word "microbes" in paragraph 3 could be best be replaced by which of the following?

A. Pieces of dust

B. Tiny organisms

C. Rays of light

D. Trapped bubbles

* Đáp án

B

* Hướng dẫn giải

Đáp án B

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